Sash-cord fastener



2 Sheets-Sheet 1.

(No Mddel.)

J. P. GARDNER.

SASH 00111) FASTENER.

No. 460,859. Patented Oct. 6, 1891 (No Model.) 2 Sheets-Sheet 2.

J. P. GARDNER;

SASH 00m) FASTENER.

No. 460,859. Patented O0t.6, 1891.

NITED STATES PATENT OFFICE.

JAMES P. GARDNER, OF CHICAGO, ILLINOIS.

SASH-COFD FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 460,859, dated October6, 1891.-

Application filed June 15. 1891- Serial No. 396,234. (No model.)

To on whom it may concern.-

Be it known that I, .TAMns P. GARDNER, a citizen of the United States ofAmerica, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inSash-Balances, of which the following is a specification.

My invention relates to a sash-balance of that class in which the sashand balancingweights are supported by thin metal ribbons or tapespassing over pulleys and secured at their opposite ends to the sash andto their respective weights. The great difficulty in constructing abalance of this sort is encountered in securely fastening the ribbon tothe sash and weights, inasmuch as its great ten sile strength can onlybe utilized by drawing upon it squarely, and it breaks readily if itcontains any sharp folds or kinks at the points of attachment. A verysuccessful device for the purpose is shown in the patent of George G.Gardner, No. 429,212, dated June 3, 1890. In this device a block ofmetal adapted for attachment to the weight or sash is provided with aflaring slot, the ribbon passed through this slot from the narrow end,looped back upon itself and back through the slot, and a body of somesort, as a pin or an intermediate fold in the band itself, interposed toprevent the loop from being drawn backward through the slot. In thisdevice, however, the weight or sash is attached directly to the block,and the main strand of the ribbon draws with its whole pull directlyupon the wedging-body in the loop. For light windows this is noobjection; but in heavy work the clips have been split by the greatstrain brought upon them. It is my purpose to so improve the fasteningthat the wedging or splitting strain shall be greatly reduced; and inworking for this object I have made certain incidental improvements,which will clearly appear from the following description.

In the drawings hereto attached, Figure 1 is a perspective of mypreferred fastening applied to the weight end of the ribbon; Fig. 2,

v a longitudinal cross-section of the same; Fig.

3, a side View of a modification; Fig. 4, a similar cross-section ofthis modification. Fig. 5 is a perspective of another modification. Fig.6 is a perspective of the fastening applied to the sash. Fig. 7 is aside view, and Fig. 8 a section, of the saslrfastening.

The general principle of my invention is the same as that of the GeorgeC. Gardner patent above referred to-that is, the ends of the metalribbon are secured to slotted blocks by passing them through the slots,looping them back upon themselves, and interposing some body within theloop to preventit from being drawn backward through the slot. mainimprovementover the fastening of said patent consists in passing theribbon through the slot in the block and about a body adapted forattachmentto the weight or sash before it is passed through the block toform the loop by means of which it is secured to said block. Thisreduces the pull upon the Wedge more than one-half, inasmuch as the pullof the weight or sash would in the absence of friction be equallydivided between the main strand of the ribbon and the one which passesabout the wedge, and the great friction which is necessarily presentadds to the portion of the weight that must be sustained by the main orsupporting strand.

Referring for a clearer explanation of this to Figs. 1 and 9, where mypreferred fastening for the weight end of the ribbon is illustrated, themetal ribbon is seen at A, and the weight at B. The slotted block orclip is lettered O, and the body about which the ribbon is passed beforebeing secured to the block consists of an open ring D, from which theweight is suspended. The main or supporting strand of the ribbon a ispassed downward through the slot in the block about the ring D, thenupward through the slot again at a, then looped back upon itself at apassed down through the slot, and a wedge E inserted and drawn into theslot. The weight B is supported through the ring D upon the strands a aof the ribbon, and in the absence of friction the weight would beequally divided between the two. As, however, the pulling downward ofthe strand a necessitates the slipping of the ribbon about the ring andupward through the slot, the great friction which is encounteredconsiderably incrcases the proportion of the weight borne by the stranda.

As far as the main purpose of the invention is concerned, it is obviousthat it is entirely immaterial whether the ring D be separate from or apart of or rigidly secured to the clip 0. Figs. 3 and 4 illustrate amodification in which the latter is the case, the block 0- in thesefigures consisting of an upper portion 0, corresponding to the block '0in Figs. 1 and 2, a downwardly-extending yoke 0, adapted for attach mentto the weight, and a cross-bar 0 about which the ribbon is passed in thesame manner as about the ring D in Figs. 1 and 2. In these figures thewedge E is dispensed with, and the body which is interposed in the loopa .of the ribbon consists of an intermediate loop a which, while not asgood as the wedge E, yet, because of the great reduction in the strainbrought upon the securing-loop, would probably be satisfactory in thehanging of light sashes. It is of course regarded as the generalequivalent of the wedge E, and in factis so shown in the prior patent ofGeorge C. Gardner, above cited. I believe it preferable, 110wever, touse the ring D, as shown in Figs. 1 and 2, inasmuch as the use of thesame still further reduces the strain upon the wedgingloop of the ribbonand also adds to the security of the fastening, because when the ring ispulled up tightly against the block 0 it becomes of itself a sort ofwedge and adds a considerable resistance to the slipping of the ribbonabout it.

Fig. 5 shows a modification, wherein the ring D is omitted, or, to speakmore accurately, is made a part of the weight B. This construction wouldof course be as good as the preferred form shown, or, indeed, betterthan the same, if it were possible or expedient to so construct theweights; but as they must obviously be large and clumsy, it is tooexpensive to cast them wit-l1 eyes smooth enough and accurate enough tobear upon the thin metal ribbon.

Figs. 6, 7, and 8 illustrate my improved fastening as adapted forattachment to the sash. In this case a block C is formed with a slottedportion 0 and a yoke 0 terminating in a cross-bar 0 The metal ribbon ispassed through the slot, around the cross-bar, bent back upon itself,and secured in the slot in the same manner as described in connectionwith the fastening at the weight end. The sash F is grooved at f, and avertical hole f extends downward from the groove,terminating in atransverse opening f The ribbon is thrust downward through the hole f,out through the opening f then secured to the block c and the blockpulled into the opening f I claim as new and desire to secure by LettersPatent- 1. A fastening for metal ribbons, consisting of a slotted block,a body adapted for attachment to whatever theribbon is to be fastenedto, and a metal ribbon secured to said body by passing it through theslot in the block, about the body, back through the slot, then loopingit back upon itself, and interposing in the loop a second body toprevent it from being drawn through the slot, substantially asdescribed.

2..A fastening for metal ribbons, consisting of ablock containing aflaring slot, a wedge fitted to said slot, abody adapted for attachmentto the object to which the ribbon is to be fastened, and a metal ribbonsecured to said body by passing it first through the slot from the broadtoward the narrow endthereof, then about the body, then back through theslot, looping the end back upon itself, interposing the wedge in theloop, and drawing it tightly into the slot, substantially as described.

JAMES P. GARDNER.

\Vitnesses:

GEORGE C. GARDNER, C. R ALrson.

